China China Factory for Polished 1/8 Oz Tungsten Round Bar Weight For Derby Manufacturer and Supplier

China Factory for Polished 1/8 Oz Tungsten Round Bar Weight For Derby

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Chemical composition:

Main and minor components	Min.content(%)	ASTM B760
W	balance	balance
La	0.77-0.94%
La2O3	0.90-1.10%
Impurities	Max.values (μg/g)	Max.values (μg/g)
Al	15	-
Cu	10	-
Cr	20	-
Fe	30	100
K	10	-
Ni	20	100
Si	20	100
Mo	100	-
C	30	100
H	5	-
N	5	100
Cd	5	-
Hg	1	-
Pb	5	-

Diameter and tolerances:

Diameter (mm)	Tolerance
	Forged	Turned	Ground
1.20-1.99	-		±0.010
2.00-2.99	-		±0.015
3.00-15.9	-		±0.020
16.0-24.9	±0.30		±0.030
25.0-34.9	±0.40		±0.050
35.0-39.9	±0.40	±0.30	±0.060
40.0-50.0	±0.40	±0.30	±0.20
50.0-80.0	±1.00	±0.40	-

Length and straightness:

Diameter (mm)	Production length (mm)	Stiraightness/Meter (mm)
Diameter (mm)	Production length (mm)	Cleaned	Ground/turned
1.20-10.0	≥500	＜2.5	＜2.5
10.1-50.0	≥300	＜2.0	＜1.5
50.1-80.0	≥100	＜2.0	＜1.5

Length tolerance:

Diameter 1.20-30.0 mm
Nominal length (mm)	≥15	15-120	120-400	400-1000	1000-2000	＞2000
Length tolerance(mm)	±0.2	±0.3	±0.5	±2.0	±3.0	±4.0
Diameter ＞30.0 mm
Nominal length (mm)	≥30	30-120	120-400	400-1000	1000-2000	＞2000
Length tolerance(mm)	±0.5	±0.8	±1.2	±4.0	±6.0	±8.0

Density:

Diameter (mm)	Density (g/cm³)
1.20-6.0	18.85
6.0-40.0	18.75
40.0-80.0	18.65

Nondestructive testing: For diameters＞15.00 mm: 100% ultrasonic testing. For diameters of 1.2-50.0mm: Eddy curent tests fro ground products visual inspection.